import java.util.Scanner;

public class Test {

    /*计算一个数的阶乘
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int pro = 1;
        for(int i = 1;i<=n;i++){
            pro *= i;
        }
        System.out.println(pro);
    }
    */

    /*计算1-100中奇数的和
    public static void main(String[] args) {
        int sum = 0;
        for(int i = 1; i <= 100;i++){
            if(i % 2 != 0){
                sum += i;
            }
        }
        System.out.println(sum);
    }
    */
}
